Some fish contain oils that cannot be digested by some people. Among the fish are escolar, also known as butterfish, and I have personally experienced this phenomenon after eating what was labeled as "sea bass".
yes
yes
no
Fish oil should not cause a change in the color of your bowels. It may affect how often you go to the bathroom.
lots
Yes
They chemical reactions cause a odour similar to that of fish.
Not if you sit on a dolphin.
Yes, it can. It can also cause cancer in your kidneys.
Oil depots can cause water pollution. This in turn can cause animals and fish to get sick and die. This disrupts the ecosystem.
It would cause pollution to sea and the oil would poison fish and sea gulls.
Mineral oil helps with constipation by lubricating the intestines and stool, making it easier for the stool to pass through the digestive system. This helps to soften the stool and promote bowel movements, relieving constipation.